One month earlier
Rogue was slowly getting used to her new powers. The mansion needed many doors replaced in the early days as she became accustomed to her super strength. Flight was an incredible sensation, though, and she felt guilty every time she flew because of how she had gained that ability. She hadn't even known she was invulnerable until she had unsuccessfully tried to dodge a blade in the Danger Room. It had cut through her uniform but didn't leave a scratch on her skin.
Carol Danvers was still comatose. Rogue didn't visit her, afraid to show her face near the Avengers. Captain America did come to the Institute to tell her that the Avengers didn't blame her for "the accident." Rogue felt torn hearing this, relieved that they knew she didn't want this to happen, but knowing she was still guilty, no matter how the events transpired. For all intents and purposes, she ended this woman's life. Shouldn't she be punished for it?
Remy had heard a report from N'orleans that his family was receiving threatening messages: blood-stained face playing cards in envelopes all addressed to Le Diable Blanc. Remy went straight to Louisiana to help his family investigate. He was surprised to hear his father had actually sent the blood "to the lab" so it could be analyzed. Jean-Luc had never trusted technology before, so to voluntarily hand over these threats seemed unusual, alarming even. His father explained that he would use any and all weapons to protect his family from Mister Sinister, and if that meant sending some samples to some scientists to help keep them safe, then that's what he would do.
Remy was there when his father received his lab report: five cards with a unique DNA sample on each card. Remy could easily believe that Sinister had killed five people to paint the cards red to make a point. Jean-Luc encouraged Remy to return to the X-Men. "It's my job to keep this family safe, mon fils," Jean-Luc said. "It's your job to take down this son of a bitch once and for all."
When Remy returned to the institute, he was glad to hear Rogue hadn't broken a single door off of its hinges in three days. It was a new personal record. He'd take any progress as a win these days.